Ecological Risk Screening Summary - Martenstyn's Barb (Systomus martenstyni) - Uncertain Risk

Species that are considered uncertain risk need a more in-depth assessment beyond the Risk Summary to better define the species’ risk to U.S. environments.

Systomus martenstyni, Martenstyn’s Barb, is a small cyprinid native to the Mahaweli River basin in central Sri Lanka, where it is harvested as a fish food. It has only been collected at a few points in its overall range, and it is listed as an endangered species on the IUCN Red List. S. martenstyni has never been reported as introduced or established outside of its native range. History of invasiveness is uncertain. This species has a low climate match with the contiguous United States overall, but a medium climate match in southern Florida. Certainty of this assessment is low because of a lack of information about the invasive potential of this species. The overall risk assessment category is uncertain.